Worked on a SaaS electronic health record (EHR) platform, developing product features, APIs, reports, and data migration tools. Designed and executed large-scale data migrations, SQL queries, document uploads, and data validation processes. Collaborated with product, QA, and support teams to resolve production issues and deliver scalable solutions.

Worked as a hands-on Tech Lead and Full-Stack Engineer, contributing to architecture, mentoring developers, and building product features. Integrated AI-powered document analysis services into the contract platform, processing and validating API responses and connecting them with business workflows. Also implemented document extraction with AWS Textract and Python models, saving more than 50 hours of manual work per month. Improved organic traffic by 15%, redesigned key user flows, built scalable APIs, and maintained the platform on AWS.

Built an open government data visualization platform using statistical charts and heatmaps. Awarded 1st Place – InnovandoPy Hackathon 2017.

Built and maintained enterprise applications for banking and education clients using .NET (C#, SQL Server, Backbone.js) and later Ruby on Rails with PostgreSQL. Implemented major features for a banking loan system, improving client and staff workflows. Executed a full UI/UX redesign, collaborating with designers and implementing responsive interfaces. Improved usability by delivering enhancements in loan application processes, streamlining customer experience. Contributed to long-term client success by shipping scalable solutions and providing continuous support.

Designed and built a laboratory information system for test tracking and automated reporting.